Gogs XSS allowed by stored call in PDF renderer in gogs.io/gogs

Open Source Vulnerabilities CVE-2025-47943

Gogs is an open source self-hosted Git service. In application version 0.14.0+dev and prior, there is a stored cross-site scripting (XSS) vulnerability present in Gogs, which allows client-side Javascript code execution. The vulnerability is caused by the usage of a vulnerable and outdated component: pdfjs-1.4.20 under public/plugins/. This issue has been fixed for gogs.io/gogs in version 0.13.3.

Open Source Vulnerabilities GO-2025-3778

Gogs XSS allowed by stored call in PDF renderer in gogs.io/gogs

Open Source Vulnerabilities GHSA-xh32-cx6c-cp4v

### Summary A stored XSS is present in Gogs which allows client-side Javascript code execution. ### Details Gogs Version: ``` docker images REPOSITORY TAG IMAGE ID CREATED SIZE gogs/gogs latest fe92583bc4fe 10 hours ago 99.3MB ``` Application version: `0.14.0+dev` Local setup using: ```bash # Pull image from Docker Hub. docker pull gogs/gogs # Create local directory for volume. sudo mkdir -p /var/gogs # Use `docker run` for the first time. docker run --name=gogs -p 10022:22 -p 10880:3000 -v /var/gogs:/data gogs/gogs ``` The vulnerability is caused by the usage of a vulnerable and outdated component: `pdfjs-1.4.20` under public/plugins/. Read more about this vulnerability at [codeanlabs - CVE-2024-4367](https://codeanlabs.com/blog/research/cve-2024-4367-arbitrary-js-execution-in-pdf-js/). ### PoC 1. Upload the Proof of Concept file hosted at https://codeanlabs.com/wp-content/uploads/2024/05/poc_generalized_CVE-2024-4367.pdf in a repository. 2. Click on the file to be previewed.  ### Credits Edoardo Ottavianelli